Moving WebRTC logging related files from content to chrome.

content/common/partial_circular_buffer_unittest.cc

-// Copyright (c) 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// The test buffer data is 52 bytes, wrap position is set to 20 (this is
-// arbitrarily chosen). The total buffer size is allocated dynamically based on
-// the actual header size. This gives:
-// Header of some size, non-wrapping part 20 bytes, wrapping part 32 bytes.
-// As input data, a 14 byte array is used and repeatedly written. It's chosen
-// not to be an integer factor smaller than the wrapping part. This ensures that
-// the wrapped data isn't repeated at the same position.
-// Note that desipte the number of wraps (if one or more), the reference output
-// data is the same since the offset at each wrap is always the same.
-
-#include "base/memory/scoped_ptr.h"
-#include "content/common/partial_circular_buffer.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace content {
-
-const uint32 kWrapPosition = 20;
-const uint8 kInputData[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14};
-const uint8 kOutputRefDataWrap[] =
-    // The 20 bytes in the non-wrapping part.
-    {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 1, 2, 3, 4, 5, 6,
-     // The 32 bytes in wrapping part.
-     11, 12, 13, 14,
-     1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
-     1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14};
-
-class PartialCircularBufferTest : public testing::Test {
- public:
-  PartialCircularBufferTest() {
-    PartialCircularBuffer::BufferData test_struct;
-    buffer_header_size_ =
-        &test_struct.data[0] - reinterpret_cast<uint8*>(&test_struct);
-
-    buffer_.reset(new uint8[buffer_header_size_ + sizeof(kOutputRefDataWrap)]);
-    pcb_write_.reset(new PartialCircularBuffer(
-        buffer_.get(),
-        buffer_header_size_ + sizeof(kOutputRefDataWrap),
-        kWrapPosition));
-  }
-
-  void WriteToBuffer(int num) {
-    for (int i = 0; i < num; ++i)
-      pcb_write_->Write(kInputData, sizeof(kInputData));
-  }
-
-  void InitReadBuffer() {
-    pcb_read_.reset(new PartialCircularBuffer(
-        buffer_.get(), buffer_header_size_ + sizeof(kOutputRefDataWrap)));
-  }
-
- protected:
-  scoped_ptr<PartialCircularBuffer> pcb_write_;
-  scoped_ptr<PartialCircularBuffer> pcb_read_;
-  scoped_ptr<uint8[]> buffer_;
-  uint32 buffer_header_size_;
-
-  DISALLOW_COPY_AND_ASSIGN(PartialCircularBufferTest);
-};
-
-TEST_F(PartialCircularBufferTest, NoWrapBeginningPartOnly) {
-  WriteToBuffer(1);
-  InitReadBuffer();
-
-  uint8 output_data[sizeof(kInputData)] = {0};
-  EXPECT_EQ(sizeof(output_data),
-            pcb_read_->Read(output_data, sizeof(output_data)));
-
-  EXPECT_EQ(0, memcmp(kInputData, output_data, sizeof(kInputData)));
-
-  EXPECT_EQ(0u, pcb_read_->Read(output_data, sizeof(output_data)));
-}
-
-TEST_F(PartialCircularBufferTest, NoWrapBeginningAndEndParts) {
-  WriteToBuffer(2);
-  InitReadBuffer();
-
-  uint8 output_data[2 * sizeof(kInputData)] = {0};
-  EXPECT_EQ(sizeof(output_data),
-            pcb_read_->Read(output_data, sizeof(output_data)));
-
-  const uint8 output_ref_data[2 * sizeof(kInputData)] =
-      {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
-       1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14};
-  EXPECT_EQ(0, memcmp(output_ref_data, output_data, sizeof(output_data)));
-
-  EXPECT_EQ(0u, pcb_read_->Read(output_data, sizeof(output_data)));
-}
-
-TEST_F(PartialCircularBufferTest, WrapOnce) {
-  WriteToBuffer(4);
-  InitReadBuffer();
-
-  uint8 output_data[sizeof(kOutputRefDataWrap)] = {0};
-  EXPECT_EQ(sizeof(output_data),
-            pcb_read_->Read(output_data, sizeof(output_data)));
-
-  EXPECT_EQ(0, memcmp(kOutputRefDataWrap, output_data, sizeof(output_data)));
-
-  EXPECT_EQ(0u, pcb_read_->Read(output_data, sizeof(output_data)));
-}
-
-TEST_F(PartialCircularBufferTest, WrapTwice) {
-  WriteToBuffer(7);
-  InitReadBuffer();
-
-  uint8 output_data[sizeof(kOutputRefDataWrap)] = {0};
-  EXPECT_EQ(sizeof(output_data),
-            pcb_read_->Read(output_data, sizeof(output_data)));
-
-  EXPECT_EQ(0, memcmp(kOutputRefDataWrap, output_data, sizeof(output_data)));
-
-  EXPECT_EQ(0u, pcb_read_->Read(output_data, sizeof(output_data)));
-}
-
-TEST_F(PartialCircularBufferTest, WrapOnceSmallerOutputBuffer) {
-  WriteToBuffer(4);
-  InitReadBuffer();
-
-  uint8 output_data[sizeof(kOutputRefDataWrap)] = {0};
-  const uint32 size_per_read = 16;
-  uint32 read = 0;
-  for (; read + size_per_read <= sizeof(output_data); read += size_per_read) {
-    EXPECT_EQ(size_per_read,
-              pcb_read_->Read(output_data + read, size_per_read));
-  }
-  EXPECT_EQ(sizeof(output_data) - read,
-            pcb_read_->Read(output_data + read, size_per_read));
-
-  EXPECT_EQ(0, memcmp(kOutputRefDataWrap, output_data, sizeof(output_data)));
-
-  EXPECT_EQ(0u, pcb_read_->Read(output_data, sizeof(output_data)));
-}
-
-}  // namespace content